“I’m impressed,” said Dr. Jennifer Haythe, a cardiologist at New York-Presbyterian Hospital Columbia who treats much sicker patients.

“Basically, in every category he’s doing very well,” she added. “He’s much healthier than the average man his age.”

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POTUS shed 5 pounds since June thanks to a healthy diet and daily exercise.

He’s also healthier than commanders-in-chief of the past, and ranks as one of the country’s 10 slimmest Presidents ever.

At age 54, President Obama still has perfect 20/20 vision. During his years in office, George W. Bush had to wear reading glasses — and had 20/30 vision in his right eye and 20/25 in his left.

While he was in office, McDonald’s devotee Bill Clinton — who later went vegan in 2010 after heart surgery — had a cholesterol level three points higher than Obama does now.

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Obama boasts a lower weight and BMI than the average American man in his 50s.

Obama’s good health comes from plenty of early medical intervention — and as such makes a case for his signature domestic achievement, Obamacare, which emphasizes regular screenings to prevent serious problems.

“It’s very important for people to get checked every year,” said Haythe. “The most important takeaway here is that you can make changes to diet and lifestyle, and have obvious effects on your lab results and overall health, without going on medication.”

Yet federal stats show that fewer than half of American men ages 45 to 64 visit a primary care generalist for a checkup, which is vital to catch health problems such as diabetes and various cancers while they’re still treatable.